Motherboard compatibility - AMD

Scott Lavender scottalavender at
Sat May 8 14:07:44 BST 2010

On Sat, May 8, 2010 at 5:44 AM, Roy Damen <roydamen at> wrote:

> Dear John,
> On my machine i had a similar problem with rt. After more than 1,5 year of
> searching, trying out and lots of help with explanation on the ubuntuforums
> i discovered that it was this BIOS setting that must be turned off: IOAPIC
> It seems that ubuntu can manage  this by itself(if i understood correctly) I
> bet this solves your problem too!
> 2010/5/7 jONE <producjohns at>
>> Hi Fernando I've got an AMD Athlon 64 X2 4000+ processor too and had
>> problems with the RT kernel since I first installed 8.04 onwards. I tried
>> pretty much everything until a few days ago, when I simply "loaded optimized
>> settings" on my BIOS and believe it or not, no mouse delay and no hanging at
>> all. My hammerfall soundcard's delay <10ms recording 16channels. I honestly
>> don't know what setting in the BIOS messed it up since "optimized settings"
>> or "default settings" options don't specify much and I've tweaked the thing
>> so many times I lost track of what the original setting was! Maybe give that
>> a try?
>> Good luck!
>> John
I remember several years ago there were some problems with peoples systems
acting sluggish or freezing with the -rt kernel during Hardy.  If I remember
correctly it had to do with acpi, although I cannot find any of those emails
on the mailing list.

However, I did find a Ubuntu Studio review by Dave Phillips that also
mentions the acpi situation:

Also, this 64Studio forum posts discusses it a little more:

Hope this helps.

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